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Viable and Stable Compact Stellar Structures in f(Q,T)$f(\mathcal {Q},\mathcal {T})$ Theory

M. Zeeshan Gul, M. Sharif, Adeeba Arooj

2024Fortschritte der Physik38 citationsDOIOpen Access PDF

Abstract

Abstract The main objective of this paper is to investigate the impact of gravity on the geometry of anisotropic compact stellar objects, where is non‐metricity and is the trace of the energy‐momentum tensor. In this perspective, the physically viable non‐singular solutions to examine the configuration of static spherically symmetric structures is used. A specific model of this theory to examine various physical quantities in the interior of the proposed compact stars (CSs) is considered. These quantities include fluid parameters, anisotropy, energy constraints, equation of state parameters, mass, compactness, and redshift. The Tolman–Oppenheimer–Volkoff equation is used to examine the equilibrium state of stellar models, while the stability of the proposed CSs is investigated through sound speed and adiabatic index methods. It is found that the proposed CSs are viable and stable in the context of this theory.

Topics & Concepts

PhysicsCompact spaceStarsEquation of stateContext (archaeology)Adiabatic processTensor (intrinsic definition)Mathematical physicsCompact starAnisotropyRedshiftStress–energy tensorAstrophysicsMathematical analysisQuantum mechanicsGeometryExact solutions in general relativityMathematicsGalaxyBiologyPaleontologyCosmology and Gravitation TheoriesSolar and Space Plasma DynamicsGeophysics and Gravity Measurements